Multi-layer core golf ball
First Claim
Patent Images
1. A golf ball comprising:
- a center formed from a first rubber composition and having a diameter of from 0.50 inches to 1.60 inches and a center hardness of from 45 Shore C to 90 Shore C;
an intermediate core layer formed from a thermoplastic composition and having a surface hardness of 40 Shore C or greater;
an outer core layer formed from a second rubber composition and having a surface hardness of 45 Shore C or greater; and
a cover layer having a surface hardness of 60 Shore D or less;
wherein the intermediate core layer having a surface hardness that is greater than both the center hardness of the center and the surface hardness of the outer core layer; and
wherein the center, the intermediate core layer, and the outer core layer each have a specific gravity of from 1.05 g/cc to 1.25 g/cc.
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Abstract
Golf balls consisting of a multi-layer core and a cover are disclosed. The multi-layer core consists of a rubber center and a rubber outer core layer that are both soft relative to a hard, thermoplastic intermediate core layer.
56 Citations
14 Claims
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1. A golf ball comprising:
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a center formed from a first rubber composition and having a diameter of from 0.50 inches to 1.60 inches and a center hardness of from 45 Shore C to 90 Shore C; an intermediate core layer formed from a thermoplastic composition and having a surface hardness of 40 Shore C or greater; an outer core layer formed from a second rubber composition and having a surface hardness of 45 Shore C or greater; and a cover layer having a surface hardness of 60 Shore D or less; wherein the intermediate core layer having a surface hardness that is greater than both the center hardness of the center and the surface hardness of the outer core layer; and wherein the center, the intermediate core layer, and the outer core layer each have a specific gravity of from 1.05 g/cc to 1.25 g/cc. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification